junghans



' Patented Aug. 9, I898. A. JUNGHANS & C. A. HIRTH ALARM CLOCK.

(Application filed Dec. 10, 1897.) (No Model.) 2 Sheets-Sheet I.

No. 608,867. Patented Aug. 9, I898. A. JUNGHANS &. C. A. HIRTH.

ALARM CLOCK.

(Application filed Dec. 10, 1897.) (No Model.) 2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

ARTHUR JUNGI'IANS AND CARL ALB. I-IIRTH, OF SOIIRAMBERG, GERMANY.

ALARM-CLOCK.

SPECIFICATION forming part of Letters Patent No. 608,867, dated August 9, 1898.

Application filed December 10, 1897. Serial No. 661,400. (No model.)

To all whom it may concern:

Be it known that we, ARTHUR J UNGHANS, manufacturer, and CARL ALBERT HIRTH, both subjects of the King of Viirtemberg, residing at Schramberg, in the Kingdom oflViirtemberg, German Empire, have invented certain new and useful. Improvements in Alarm- Clocks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In most of the alarm-clocks hitherto in use the mechanism for operating the bell has generally been mounted underneath the latter, which was attached to the exterior of the easing, and the alarm was generally set or wound up by means of a button mounted on the bell. This arrangement has several disadvantages, being inconvenient to handle and, owing to the exposed position of the parts, easily liable to get damaged.

The present invention consists of a simplified form of alarm-clock in which the parts are more advantageously distributed, the clockwork proper and the alarm mechanism being arranged one behind the other on a common spindle and the parts being within the casing, so that the hammer of the bell only will extend out of the same; and in order to render the present specification more easily intelligible reference is had to the accompanyin g drawings, in which similar letters of reference denote similar parts throughout the several views.

Figure l is a side elevation of the clock with the bell and casing in vertical section;

' Fig. 2, a rear sectional elevation on the line cc of Fig. 1; Fig. 3, a rear sectional elevation 011 the line y y of Fig. 1. Fig. 4 is a similar sectional elevation to that of Fig. l, but showing a modified form of the device; Fig. 5, a rear elevation, the rear wall of the casing being removed; and Fig. 6, a rear sectional elevation on the line ,2 z of Fig. 4.

Referring to Figs. 1 to 3, a indicates the casing; 12, the alarm-gong; c, the dial, and d and e the frame-plates supporting the various parts of the mechanism.

The alarm-operating mechanism A and the clockwork proper, B, are distributed in the following manner around the central spindle f of the clock: The key 9 for the alarm is screwed to the sleeve h and is connected by means of the same to the spring of the alarm mechanism, which is mounted within a suitable drum t. The sleeve h is mounted on a sleeve m, fast on the plate a, which is secured to the framework, said sleeve h having fast thereon a ratchet-wheel it, in which the pawl Z, mounted on the arm 0, engages. The periphery of the spring-drum is provided with teeth i, with which a lantern-pinion Z meshes, operating the hammer i of the gong by means of the parts "i "i in the well-known manner. The key *1, by means of which the clockwork proper is wound up, is screwed to the revoluble sleeve p, mounted within the stationary sleeve m, said sleeve 19 extending through the frame-plate n and having fast thereon a pinion 8. The latter meshes with a gear t, which is provided with a pawl 10, said gear being fast to the spindle of the spring-containing drum '0, so that the clockwork may be wound up by means of the key 7 and the operatinggearing just described.

The modification shown in Figs. 4;, 5, and 6 is substantially analogous to the construction already described. The key a for winding up the alarm mechanism is provided with two lugs or projections e 6*, by means of which it engages the end of the sleeve 0 which has fast thereto a ratchet-gear g with pawl f The said sleeve c is also connected to the spring of the alarm mechanism mounted in the drum (V. The key b for Winding up the clockwork is screwed to the sleeve h which is passed through the sleeve e and 0p crates the mainspring by means of the gearing s t, as previously described.

WVe claim as our invention- 1. In a clock, the combination, with a frameplate provided with a stationary projecting sleeve, of a tubular shaft journaled in the said sleeve and projecting laterally through the said frame-plate, a toothed wheel secured on the said shaft behind the frame-plate and connected to the clock-winding mechanism, and a revoluble shaft connected to the clocksetting mechanism and arranged inside the said tubular shaft, substantially as set forth.

2. In a clock, the combination, with two frame-plates c and n, of which the plate 1?. has a stationary projecting sleeve; of a tubular mechanism, a shaft f passing through the tubular shaft 19 and connected to the clock-setting mechanism, and means for turning the said shafts p and f and the sleeve h, substantially as set forth.

In witness whereof we have hereunto signed our names in the presence of two subscribing 2 witnesses.

ARTHUR J'UNGI-IANS. 0. ALB. HIRTH. \Vitnesses:

CHN. BAUER, WM. HAHN. 

